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   <div id="projectname">SSD1306 OLED display driver
   &#160;<span id="projectnumber">1.8.2</span>
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   <div id="projectbrief">This library is developed to control SSD1306/SSD1331/SSD1351/IL9163/PCD8554 RGB i2c/spi LED displays</div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">    MIT License</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">    Copyright (c) 2018, Alexey Dynda</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">    Permission is hereby granted, free of charge, to any person obtaining a copy</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">    of this software and associated documentation files (the &quot;Software&quot;), to deal</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">    in the Software without restriction, including without limitation the rights</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">    copies of the Software, and to permit persons to whom the Software is</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">    furnished to do so, subject to the following conditions:</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">    The above copyright notice and this permission notice shall be included in all</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">    copies or substantial portions of the Software.</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">    THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">    SOFTWARE.</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="vga_8h.html">intf/vga/vga.h</a>&quot;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment">// Never include vga128x64_isr.h here!!!</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ssd1306__interface_8h.html">intf/ssd1306_interface.h</a>&quot;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="lcd__common_8h.html">lcd/lcd_common.h</a>&quot;</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="vga__commands_8h.html">lcd/vga_commands.h</a>&quot;</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#if defined(CONFIG_VGA_AVAILABLE) &amp;&amp; defined(CONFIG_VGA_ENABLE) &amp;&amp; defined(__AVR_ATmega328P__)</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="keyword">extern</span> uint16_t ssd1306_color;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">/* This buffer fits 128x64 pixels</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">   Each 8 pixels are packed to 3 bytes:</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment">   BYTE1: B7 R2 G2 B2 B8 R1 G1 B1</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment">   BYTE2: G7 R4 G4 B4 G8 R3 G3 B3</span></div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment">   BYTE3: R7 R6 G6 B6 R8 R5 G5 B5</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">   Yeah, a little bit complicated, but this allows to quickly unpack structure</span></div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">// Set to ssd1306 compatible mode by default</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="keyword">static</span> uint8_t s_mode = 0x01;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="keyword">static</span> uint8_t s_vga_command = 0xFF;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="keyword">static</span> uint8_t s_vga_arg = 0;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="keyword">static</span> uint8_t s_column = 0;</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="keyword">static</span> uint8_t s_column_end = 0;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="keyword">static</span> uint8_t s_cursor_x = 0;</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="keyword">static</span> uint8_t s_cursor_y = 0;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="keyword">volatile</span> uint8_t s_vga_frames;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> vga_controller_init(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;{</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    s_vga_command = 0xFF;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;}</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> vga_controller_stop(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;{</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    s_vga_command = 0xFF;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;}</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> vga_controller_close(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;{</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;}</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment"> * Function sends 8 vertical pixels to buffer</span></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> vga_controller_put_pixels(uint8_t x, uint8_t y, uint8_t pixels)</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;{</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    uint16_t addr = (x &gt;&gt; 3)   + (uint16_t)(y * 16);</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    uint8_t offset = x &amp; 0x07;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    uint8_t mask = 1 &lt;&lt; offset;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <span class="keywordflow">if</span> (addr &gt;= 16*64)</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    {</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        <span class="keywordflow">return</span>;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    }</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    <span class="keywordflow">for</span> (uint8_t i=8; i&gt;0; i--)</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    {</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        <span class="keywordflow">if</span> (pixels &amp; 0x01) __vga_buffer[addr] |= mask;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;                      <span class="keywordflow">else</span> __vga_buffer[addr] &amp;= ~mask;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        addr += 16;</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;        pixels &gt;&gt;= 1;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    }</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;}</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> vga_controller_send_byte(uint8_t data)</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;{</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <span class="keywordflow">if</span> (s_vga_command == 0xFF)</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    {</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        s_vga_command = data;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        <span class="keywordflow">return</span>;</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    }</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    <span class="keywordflow">if</span> (s_vga_command == 0x40)</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    {</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        vga_controller_put_pixels(s_cursor_x, s_cursor_y, data);</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        s_cursor_x++;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        <span class="keywordflow">if</span> (s_cursor_x &gt; s_column_end)</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        {</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            s_cursor_x = s_column;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;            s_cursor_y += 8;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        }</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        <span class="keywordflow">return</span>;</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    }</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="comment">// command mode</span></div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    <span class="keywordflow">if</span> (!s_vga_command)</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    {</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        s_vga_command = data;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        s_vga_arg = 0;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    }</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    <span class="keywordflow">if</span> (s_vga_command == <a class="code" href="vga__commands_8h.html#a6a3ce562f42b87c3763dd0cdd3f1dee2a85b2ea560661c4e81b3746fa463d6d51">VGA_SET_BLOCK</a>)</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    {</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        <span class="comment">// set block</span></div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        <span class="keywordflow">if</span> (s_vga_arg == 1)</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        {</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;            s_column = data &gt;= <a class="code" href="group___l_c_d___i_n_t_e_r_f_a_c_e___a_p_i.html#gaddd9cfaaeac4d2937f5372313ddaee4f">ssd1306_lcd</a>.<a class="code" href="structssd1306__lcd__t.html#a0c7d9e9ee7e3d36391e55731b0ebc516">width</a> ? <a class="code" href="group___l_c_d___i_n_t_e_r_f_a_c_e___a_p_i.html#gaddd9cfaaeac4d2937f5372313ddaee4f">ssd1306_lcd</a>.<a class="code" href="structssd1306__lcd__t.html#a0c7d9e9ee7e3d36391e55731b0ebc516">width</a> - 1 : data ;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            s_cursor_x = s_column;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        }</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;        <span class="keywordflow">if</span> (s_vga_arg == 2) { s_column_end = data &gt;= <a class="code" href="group___l_c_d___i_n_t_e_r_f_a_c_e___a_p_i.html#gaddd9cfaaeac4d2937f5372313ddaee4f">ssd1306_lcd</a>.<a class="code" href="structssd1306__lcd__t.html#a0c7d9e9ee7e3d36391e55731b0ebc516">width</a> ? <a class="code" href="group___l_c_d___i_n_t_e_r_f_a_c_e___a_p_i.html#gaddd9cfaaeac4d2937f5372313ddaee4f">ssd1306_lcd</a>.<a class="code" href="structssd1306__lcd__t.html#a0c7d9e9ee7e3d36391e55731b0ebc516">width</a> - 1 : data; }</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <span class="keywordflow">if</span> (s_vga_arg == 3) { s_cursor_y = (data &lt;&lt; 3); }</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        <span class="keywordflow">if</span> (s_vga_arg == 4) { s_vga_command = 0; }</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    }</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <span class="keywordflow">if</span> (s_vga_command == <a class="code" href="vga__commands_8h.html#a6a3ce562f42b87c3763dd0cdd3f1dee2a699dc4ba7ac890dffb99907e5d705d54">VGA_SET_MODE</a>)</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    {</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        <span class="keywordflow">if</span> (s_vga_arg == 1) { s_mode = data; s_vga_command = 0; }</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    }</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    s_vga_arg++;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;}</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> vga_controller_send_bytes(<span class="keyword">const</span> uint8_t *buffer, uint16_t len)</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;{</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    <span class="keywordflow">while</span> (len--)</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    {</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        <a class="code" href="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i.html#ga15909bf29819391d35ecb7f4e37fbea3">ssd1306_intf</a>.<a class="code" href="structssd1306__interface__t.html#a9d99111dfccc867514cab4e2ae2cd613">send</a>(*buffer);</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        buffer++;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    }</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;}</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> init_vga_crt_driver(uint8_t enable_jitter_fix)</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;{</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    cli();</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    <span class="keywordflow">if</span> (enable_jitter_fix)</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    {</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        <span class="comment">// Configure Timer 0 to calculate jitter fix</span></div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        TIMSK0=0;</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        TCCR0A=0;</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        TCCR0B=1;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        OCR0A=0;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        OCR0B=0;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        TCNT0=0;</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    }</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <span class="keywordflow">else</span></div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    {</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        <span class="comment">// Sorry, we still need to disable timer0 interrupts to avoid wake up in sleep mode</span></div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;        TIMSK0 &amp;= ~(1&lt;&lt;TOIE0);</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    }</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <span class="comment">// Timer 1 - vertical sync pulses</span></div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    pinMode (V_SYNC_PIN, OUTPUT);</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    TCCR1A=(1&lt;&lt;WGM10) | (1&lt;&lt;WGM11) | (1&lt;&lt;COM1B1);</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    TCCR1B=(1&lt;&lt;WGM12) | (1&lt;&lt;WGM13) | (1&lt;&lt;CS12) | (1&lt;&lt;CS10); <span class="comment">//1024 prescaler</span></div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    OCR1A = 259;  <span class="comment">// 16666 / 64 us = 260 (less one)</span></div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    OCR1B = 0;    <span class="comment">// 64 / 64 us = 1 (less one)</span></div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    TIFR1 = (1&lt;&lt;TOV1);   <span class="comment">// clear overflow flag</span></div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    TIMSK1 = (1&lt;&lt;TOIE1);  <span class="comment">// interrupt on overflow on timer 1</span></div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    <span class="comment">// Timer 2 - horizontal sync pulses</span></div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    pinMode (H_SYNC_PIN, OUTPUT);</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    TCCR2A=(1&lt;&lt;WGM20) | (1&lt;&lt;WGM21) | (1&lt;&lt;COM2B1); <span class="comment">//pin3=COM2B1</span></div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;    TCCR2B=(1&lt;&lt;WGM22) | (1&lt;&lt;CS21); <span class="comment">//8 prescaler</span></div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    OCR2A = 63;   <span class="comment">// 32 / 0.5 us = 64 (less one)</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    OCR2B = 7;    <span class="comment">// 4 / 0.5 us = 8 (less one)</span></div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="comment">//    if (enable_jitter_fix)</span></div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    {</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;        TIFR2 = (1&lt;&lt;OCF2B);   <span class="comment">// on end of h-sync pulse</span></div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        TIMSK2 = (1&lt;&lt;OCIE2B); <span class="comment">// on end of h-sync pulse</span></div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    }</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;<span class="comment">//    else</span></div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="comment">//    {</span></div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="comment">//        TIFR2 = (1&lt;&lt;TOV2);    // int on start of h-sync pulse</span></div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;<span class="comment">//        TIMSK2 = (1&lt;&lt;TOIE2);  // int on start of h-sync pulse</span></div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="comment">//    }</span></div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="comment">// Set up USART in SPI mode (MSPIM)</span></div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    pinMode(14, OUTPUT);</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    pinMode(15, OUTPUT);</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    pinMode(16, OUTPUT);</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    PORTC = 0;</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    sei();</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;}</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="keywordtype">void</span> ssd1306_vga_controller_128x64_init_no_output(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;{</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <a class="code" href="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i.html#ga15909bf29819391d35ecb7f4e37fbea3">ssd1306_intf</a>.<a class="code" href="structssd1306__interface__t.html#afd33289a509ae27cbdafd118b91ff23e">spi</a> = 0;</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    <a class="code" href="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i.html#ga15909bf29819391d35ecb7f4e37fbea3">ssd1306_intf</a>.<a class="code" href="structssd1306__interface__t.html#a347dbbf8fdb470d133901c8fbd8c5186">start</a> = vga_controller_init;</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;    <a class="code" href="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i.html#ga15909bf29819391d35ecb7f4e37fbea3">ssd1306_intf</a>.<a class="code" href="structssd1306__interface__t.html#a1cccdffea7b707f9db54e93375d12a22">stop</a> = vga_controller_stop;</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    <a class="code" href="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i.html#ga15909bf29819391d35ecb7f4e37fbea3">ssd1306_intf</a>.<a class="code" href="structssd1306__interface__t.html#a9d99111dfccc867514cab4e2ae2cd613">send</a> = vga_controller_send_byte;</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    <a class="code" href="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i.html#ga15909bf29819391d35ecb7f4e37fbea3">ssd1306_intf</a>.<a class="code" href="structssd1306__interface__t.html#ab753c14b485fd4588cc08ed6bf598b4c">send_buffer</a> = vga_controller_send_bytes;</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    <a class="code" href="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i.html#ga15909bf29819391d35ecb7f4e37fbea3">ssd1306_intf</a>.<a class="code" href="structssd1306__interface__t.html#a082afeefa07cb717ef3f837667b18491">close</a> = vga_controller_close;</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;}</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="keywordtype">void</span> ssd1306_vga_controller_128x64_init_enable_output(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;{</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    ssd1306_vga_controller_128x64_init_no_output();</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    init_vga_crt_driver(1);</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;}</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="keywordtype">void</span> ssd1306_vga_controller_128x64_init_enable_output_no_jitter_fix(<span class="keywordtype">void</span>)</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;{</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    ssd1306_vga_controller_128x64_init_no_output();</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    init_vga_crt_driver(0);</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment">//    set_sleep_mode (SLEEP_MODE_IDLE);</span></div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;}</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="keywordtype">void</span> ssd1306_debug_print_vga_buffer_128x64(<span class="keywordtype">void</span> (*func)(uint8_t))</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;{</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    <span class="keywordflow">for</span>(<span class="keywordtype">int</span> y = 0; y &lt; <a class="code" href="group___l_c_d___i_n_t_e_r_f_a_c_e___a_p_i.html#gaddd9cfaaeac4d2937f5372313ddaee4f">ssd1306_lcd</a>.<a class="code" href="structssd1306__lcd__t.html#af576fdaf144fefdb8e278ca3cb90f49e">height</a>; y++)</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    {</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        <span class="keywordflow">for</span>(<span class="keywordtype">int</span> x = 0; x &lt; <a class="code" href="group___l_c_d___i_n_t_e_r_f_a_c_e___a_p_i.html#gaddd9cfaaeac4d2937f5372313ddaee4f">ssd1306_lcd</a>.<a class="code" href="structssd1306__lcd__t.html#a0c7d9e9ee7e3d36391e55731b0ebc516">width</a>; x++)</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        {</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;            uint8_t color = __vga_buffer[(x &gt;&gt; 3) + y * 16] &amp; (1&lt;&lt; (x&amp;0x07));</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;            <span class="keywordflow">if</span> (color)</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;            {</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;                func(<span class="charliteral">&#39;#&#39;</span>);</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;                func(<span class="charliteral">&#39;#&#39;</span>);</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;            }</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;            <span class="keywordflow">else</span></div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;            {</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;                func(<span class="charliteral">&#39; &#39;</span>);</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;                func(<span class="charliteral">&#39; &#39;</span>);</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;            }</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;        }</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;        func(<span class="charliteral">&#39;\n&#39;</span>);</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;    }</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;    func(<span class="charliteral">&#39;\n&#39;</span>);</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;}</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="structssd1306__interface__t_html_a9d99111dfccc867514cab4e2ae2cd613"><div class="ttname"><a href="structssd1306__interface__t.html#a9d99111dfccc867514cab4e2ae2cd613">ssd1306_interface_t::send</a></div><div class="ttdeci">void(* send)(uint8_t data)</div><div class="ttdef"><b>Definition:</b> <a href="ssd1306__interface_8h_source.html#l00070">ssd1306_interface.h:70</a></div></div>
<div class="ttc" id="lcd__common_8h_html"><div class="ttname"><a href="lcd__common_8h.html">lcd_common.h</a></div></div>
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<div class="ttc" id="vga__commands_8h_html"><div class="ttname"><a href="vga__commands_8h.html">vga_commands.h</a></div></div>
<div class="ttc" id="vga__commands_8h_html_a6a3ce562f42b87c3763dd0cdd3f1dee2a699dc4ba7ac890dffb99907e5d705d54"><div class="ttname"><a href="vga__commands_8h.html#a6a3ce562f42b87c3763dd0cdd3f1dee2a699dc4ba7ac890dffb99907e5d705d54">VGA_SET_MODE</a></div><div class="ttdef"><b>Definition:</b> <a href="vga__commands_8h_source.html#l00059">vga_commands.h:59</a></div></div>
<div class="ttc" id="vga_8h_html"><div class="ttname"><a href="vga_8h.html">vga.h</a></div></div>
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<div class="ttc" id="structssd1306__interface__t_html_a082afeefa07cb717ef3f837667b18491"><div class="ttname"><a href="structssd1306__interface__t.html#a082afeefa07cb717ef3f837667b18491">ssd1306_interface_t::close</a></div><div class="ttdeci">void(* close)(void)</div><div class="ttdoc">deinitializes internal resources, allocated for interface. </div><div class="ttdef"><b>Definition:</b> <a href="ssd1306__interface_8h_source.html#l00088">ssd1306_interface.h:88</a></div></div>
<div class="ttc" id="group___l_c_d___i_n_t_e_r_f_a_c_e___a_p_i_html_gaddd9cfaaeac4d2937f5372313ddaee4f"><div class="ttname"><a href="group___l_c_d___i_n_t_e_r_f_a_c_e___a_p_i.html#gaddd9cfaaeac4d2937f5372313ddaee4f">ssd1306_lcd</a></div><div class="ttdeci">ssd1306_lcd_t ssd1306_lcd</div><div class="ttdef"><b>Definition:</b> <a href="lcd__common_8c_source.html#l00033">lcd_common.c:33</a></div></div>
<div class="ttc" id="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i_html_ga15909bf29819391d35ecb7f4e37fbea3"><div class="ttname"><a href="group___l_c_d___h_w___i_n_t_e_r_f_a_c_e___a_p_i.html#ga15909bf29819391d35ecb7f4e37fbea3">ssd1306_intf</a></div><div class="ttdeci">ssd1306_interface_t ssd1306_intf</div><div class="ttdef"><b>Definition:</b> <a href="ssd1306__interface_8c_source.html#l00031">ssd1306_interface.c:31</a></div></div>
<div class="ttc" id="vga__commands_8h_html_a6a3ce562f42b87c3763dd0cdd3f1dee2a85b2ea560661c4e81b3746fa463d6d51"><div class="ttname"><a href="vga__commands_8h.html#a6a3ce562f42b87c3763dd0cdd3f1dee2a85b2ea560661c4e81b3746fa463d6d51">VGA_SET_BLOCK</a></div><div class="ttdef"><b>Definition:</b> <a href="vga__commands_8h_source.html#l00047">vga_commands.h:47</a></div></div>
<div class="ttc" id="structssd1306__lcd__t_html_af576fdaf144fefdb8e278ca3cb90f49e"><div class="ttname"><a href="structssd1306__lcd__t.html#af576fdaf144fefdb8e278ca3cb90f49e">ssd1306_lcd_t::height</a></div><div class="ttdeci">lcduint_t height</div><div class="ttdef"><b>Definition:</b> <a href="lcd__common_8h_source.html#l00097">lcd_common.h:97</a></div></div>
<div class="ttc" id="ssd1306__interface_8h_html"><div class="ttname"><a href="ssd1306__interface_8h.html">ssd1306_interface.h</a></div></div>
<div class="ttc" id="structssd1306__interface__t_html_afd33289a509ae27cbdafd118b91ff23e"><div class="ttname"><a href="structssd1306__interface__t.html#afd33289a509ae27cbdafd118b91ff23e">ssd1306_interface_t::spi</a></div><div class="ttdeci">uint8_t spi</div><div class="ttdef"><b>Definition:</b> <a href="ssd1306__interface_8h_source.html#l00057">ssd1306_interface.h:57</a></div></div>
<div class="ttc" id="structssd1306__interface__t_html_ab753c14b485fd4588cc08ed6bf598b4c"><div class="ttname"><a href="structssd1306__interface__t.html#ab753c14b485fd4588cc08ed6bf598b4c">ssd1306_interface_t::send_buffer</a></div><div class="ttdeci">void(* send_buffer)(const uint8_t *buffer, uint16_t size)</div><div class="ttdoc">Sends bytes to SSD1306 device. </div><div class="ttdef"><b>Definition:</b> <a href="ssd1306__interface_8h_source.html#l00080">ssd1306_interface.h:80</a></div></div>
<div class="ttc" id="structssd1306__lcd__t_html_a0c7d9e9ee7e3d36391e55731b0ebc516"><div class="ttname"><a href="structssd1306__lcd__t.html#a0c7d9e9ee7e3d36391e55731b0ebc516">ssd1306_lcd_t::width</a></div><div class="ttdeci">lcduint_t width</div><div class="ttdef"><b>Definition:</b> <a href="lcd__common_8h_source.html#l00094">lcd_common.h:94</a></div></div>
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